Dyfyniad APA
Halliday, D., Resnick, R., & Krane, K. S. (2000). Physics (4th ed.). John Wiley & Sons.
Dyfyniad Arddull Chicago
Halliday, David, Roberrt Resnick, and Kenneth S. Krane. Physics. 4th ed. New York: John Wiley & Sons, 2000.
Dyfyniad MLA
Halliday, David, et al. Physics. 4th ed. John Wiley & Sons, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.